During an experiment water was heated in a container covered with a glass lid. the following observations were recorded.
observation 1: water droplets form on the inside of the glass lid.
observation 2: bubbles rise as the water starts boiling. based on the observation, justify the type of change (physical or chemical) that took place.

It is a physical change because it only changed states

physical, even though it is boiling but the droplets is still water, water when boil was still water

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

b.

the accuracy of the data.